Gas burner for heating purposes



No Model. P. H.1\ILLS01\I GAS BURNER POR HEATING PURPOSES.

UNITED STATES- PArnNr OFFICE.

PETER H. NELSON, OF CHICAGO, ILLINOIS, ASSIGNOR TO TI-IE S. H. SINCLAIR COMPANY, OF

SAME PLACE.

SPECIFICATION forming part of Letters patent naaaales, dated April 5, 1892.

Application inea Aprn 2s, 1891.'

To all whom it may concern: I

Be it known that I, PETER H. NELSON, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Gas-Burners for Heating Purposes; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to burners for heating purposes, and more particularly to that class of burners of this description which are employed to heat hollow metal rolls, such as are used in vironing-machines and for other purposes.

The object of my present invention is to provide a burner of this class which shall be simple and cheap in construction and efficient in operation.

To these ends my invention consists in certain novel features, which I will now proceed to describe, and will then particularly point out in the appended claims.

In the accompanying drawings, Figure l is a longitudinal vertical section, partly in elevation, of a structure embodying my invention. Fig. 2 is a transverse sectional view taken on the line 2 2 of Fig. land on an enlarged scale.

In the drawings, A represents the hollow roller to be heated, and u. the hollow journal thereof, through which the pipes extend which supply the burner and support the same in the interior of the roller.

B represents the body portion of the burner proper, consisting of a single casting having an upper chamber B', to which mixed gas and air are supplied under pressure in any suitable manner, such as that hereinafter set forth, and a lower chamber B2, to which air under pressure is similarly supplied. The upper portion B3 of the body B is preferably cylindrical externally as well as internally, and below this cylindricalportion B3 the body B is extended laterally on both sides, so as to form substantially horizontal ledges or ilanges b.

Through the top of the chamber B there are formed a plurality of diverging apertures serian. 390,096 (No maar.)

b', and from the chamber B2 apertures or passages 62 extend upward on each side to the inner edge of the ledges b, where they join the part BB. These apertures or passages are 55 formed in the body B and are arranged in two rows, one row on each side of the burner. On each ledge b there is mounted a strip B4, extending the length ofthe burner and arranged with its inner edge a slight distance 6o from the outer surface of the part B3, so as to form between Said part and the strip a narrow passage or slot b3 of less Width than the diameter of the apertures h2 and extending the length of the burner on each side thereof 65 and on each side ofy the apertures l2. The lower inner edge of each'strip is cut away to form a-chamber b4 on each side of the burner, into which chambers the apertures or passages 292 open, and fromwhich chambers the 7o slots b3 lead to the exterior of the burner. The strips B4 may be secured in place by screws b5 or other suitable means.

C indicates a pipe, one end of which is' screwed into the end of the bodyB and communicates with the gas and air chamber B therein. D indicates a similar pipe, also having one end screwed into the end of the body B and communicating with the air-chamber B2 therein. These pipes support the burner 8o proper within the roller A vand are themselves supported at their outer ends by a bracket-arm E, adapted to be attached to the frame of the machine and having at its upper end a housing E', with apertures to re- 85 ceive the pipes C and D, which are secured therein by a set-screw e' or otherwise.

F represents a head-piece having chambers F and F2, with the former of which the pipe C is connected, While the pipe D communi- 9o cates with the latter chamber.

Gindicates a cock communicating with the chamber F and adapted to be connected with any suitable source of gas-supply, and H indicates a similar cock connected with any suitable source for supplying air under pressure and communicating with the chamber F2. A small passage f connects the chambers E2 and F.

The operation is as follows: Gas under roc pressure is admitted through the cock G to A the chamber E', while air under pressure is admitted through the cock II to the chamber F2. A portion of the air in the chamber F2 will pass through the passage finto the chamber F and will mingle with the gas contained in said chamber, the mixture of gas and air thus obtained being carried through the pipe C into the chamber B of the burner, whence it issues from the diverging apertures b', being ignited as it so issues. The air from the chamber F2 passes through the pipe D into the chamber B2 and thence through the apertures or passages h2 into the chambers b, whence it issues in a continuous sheet at each side of the apertures b through the slots b3. The air thus issuing mingles with the burning mixture of gas and air issuing from the apertures b and causes a complete combustion thereof, thus avoiding the depositing of soot on the interior ot` the roller, thereby main taining the efficiency of action of the heating apparatus thereon. It will be observed that by the employment of continuous passages or slots b3 of less width than the apertures b2 and by interposing the chambers b4 between the slots b3 and the respective rows of apertures b2, said chambers act as pressure-chambers, and thereby cause the air to issue in continuous sheets and with considerable force instead of issuing in jets directly from the apertures b2, thus insuring a suiiicient airsupply for each of the apertures Z9.

What I claim isl. A burner comprising a unitary relativelylong body portion provided with two longitudinal spaces or recesses constituting an upper gas and air chamber and a lower air-chainber, a plurality of apertures or passages out of alignment and extending from the upper chamber to lthe top of the body, other apertures or passages extending from the lower chamber to the sides of the body, continuous pressure-chambers on each side, in which said last-mentioned apertures or passages terminate, and contracted longitudinal slots eX- tending from said pressure-chambers upward to the sides of the portion of the body containing the gas and air outlet apertures, substantially as described.

2. A burner comprisingasingle relativelylong body portion provided with two longitudinal recesses constituting an upper gas and air chamber and a lower air-cha1nber, a plurality of apertures or passages extending from the upper chamber to the top of the body and out of alignment, other apertures or passages extending from the lower chamber to the sides of thel body, lateral ledges or shoulders on the body proper at the upper ends of these latter passages, and a single strip secured on each of said ledges, arranged to form contracted longitudinal slots between their inner edges and the body, said strips being cut away or rabbeted at theirv lower inner edges to form continuous pressure-chambers intermediate, between, and connecting the air-passages and said slots, substantially as described.

3. In a burner for heating purposes, the combination, with a gas-chamber and an airchamber integral in one head and arranged one above the other with a connecting-passage between them and suitable connections to said chambers, of a burner having gas and air chambers, one above the other, integral in one body, and provided with suitable gas and air outlet passages, two pipes arranged one above the other, having their ends secured to the head and the burner, respectively, and connecting the chambers of said parts in pairs, and a supporting-bracket engaging said pipes and adapted to be connected with the machine-frame, substantially as described.

4. In a burner for heating purposes, the combination, with two superposed chambers integral in one head and communicating with each other by a suitable passage, said chambers being connected with suitable supplypipes and the body portion of the burner proper having similarly-arranged non-communicating chambers provided with air and gas outlets, of two super-posed pipes connecting in pairs the chambers of the head with those of the burner proper, said pipes having their ends secured to the head and the body, respectively, and a bracket adapted to be connected with the machine-frame and having an enlarged part or housing with parallel apertures through which said pipes extend, and means for securing said pipes to said bracket, substantially as described.

In testimony that I claim the foregoing as my invention I aiiix my signature in presence of two witnesses.

PETER Il. NELSON.

Vitnesses:

TAYLOR E. BROWN, F. A. WALKER.

IOO 

